WASHINGTON (AP) — No one on the Supreme Court objected publicly when the justices voted to let Arizona proceed with the execution of Joseph Wood, who unsuccessfully sought information about the drugs that would be used to kill him.

Inmates in Florida and Missouri went to their deaths by lethal injection in the preceding weeks after the high court refused to block their executions. Again, no justice said the executions should be stopped.

Even as the number of executions annually has dropped by more than half over the past 15 years and the court has barred states from killing juveniles and the mentally disabled, no justice has emerged as a principled opponent of the death penalty.